Smart thinking from Sara on providing a PNG fallback to browsers that don’t support SVG. Although, actually what I like about this solution is that it’s less about providing PNG as a fallback, and more about treating PNG as the baseline and SVG as the enhancement (an approach that the picture element is perfect for).

If you’re adding some noise texture to your backgrounds, this little service might be handy. I usually base-64 encode these kinds of background images: it would be nice to see that added as an option here.